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When should I create a destructor?
...te example, I have a matrix class in C# that utilizes an underlying native C++ matrix class to do a lot of heavy lifting - I make a lot of matrices - a "destructor" is far superior to IDisposable in this specific case, because it keeps the managed and unmanaged sides of the house in better sync
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g++ undefined reference to typeinfo
.... Note: In case of dynamic library linking you may get a mangled name. Use c++filt <mangledNameVariable> to get it in a readable form. The typeinfo error with a class name was in my case because of a missing virtual destructor implementation in some base class.
– chmike
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error: Libtool library used but 'LIBTOOL' is undefined
I am trying to automake the OrientDb C++ library, but getting some errors.
5 Answers
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How can I create Min stl priority_queue?
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The default priority queue in C++ is a max priority queue.
– qwr
Feb 20 at 8:03
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An algorithm for inflating/deflating (offsetting, buffering) polygons
...gon offsetting too. The library is open source freeware written in Delphi, C++ and C#. It has a very unencumbered Boost license allowing it to be used in both freeware and commercial applications without charge.
Polygon offsetting can be performed using one of three offset styles - squared, round ...
How to throw std::exceptions with variable messages?
...cit conversion, ie: runtime_error((boost::format("Text %1" % 2).str())). C++20 introduces a std::format that will provide similar functionality.
– Digicrat
Jun 19 at 18:43
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Combining node.js and Python
...ans, for example if you later want to do part of the computational task in C++ it's very easy to do add it to the mix using Thrift.
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Simulate delayed and dropped packets on Linux
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This tutorial on networking physics simulations contains a C++ class in the sample code for simulating latency and packet loss in a UDP connection and may be of guidance. See the public latency and packetLoss variables of the Connection class found in the Connection.h file of the dow...
How is “int main(){(([](){})());}” valid C++?
... from the beginning: [](){} is an empty lambda expression.
Then, in C and C++, you can wrap expressions in parens and they behave exactly the same† as if written without them, so that's what the first pair of parens around the lambda does. We're now at ([](){}).
Then, () after the first wrapping...
Given an array of numbers, return array of products of all other numbers (no division)
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Here is a small recursive function (in C++) to do the modofication in place. It requires O(n) extra space (on stack) though. Assuming the array is in a and N holds the array length, we have
int multiply(int *a, int fwdProduct, int indx) {
int revProduct = 1;
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